Vietnamese police have widened their investigation into alleged graft and mismanagement connected with the state-owned oil and gas giant PetroVietnam that caused $69 million in losses. Three PetroVietnam subsidiaries are being investigated for alleged abuse of power in appropriating $5.3 million, the Ministry of Public Security said in a statement late Wednesday. The case centers on Ocean Bank, which was taken over by State Bank in 2015 at no cost after reporting losses of $445...